Dentist&#39;s anvil.



L. F. KOEHLER.

DENTISTS ANVIL.

APPLICATION FILED 1211.3, 1911.

1,018,712, l l Patented Feb. 27, 1912.

1 MWA COLUMBIA PLANDIIRAPU C0..WASH|NGTON, D. i:

INVENTOR LOUIS F. KOEHLER, OF CHICAGO, ILLINOIS.

DENTISTS ANVIL.

Specication of Letters Patent.

Application iled April 3, 1911.

Patented Feb. 27, 1912.

Serial No. 618,513.

To all whom it may concern:

Be it known that I, Louis F. KonHLnR, a citizen of the United States,and a resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Dentists Anvils;and I do hereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,and to the characters of reference marked thereon, which form a part ofthis specification. Y

This invention relates to a novel dentists anvil and the inventionconsists in the matters hereinafter set forth and more particularlypointed out in the appended claims.

Among the objects of the invention is to provide an anvil comprising abody having a plurality of recessed sides to receive suitable materialformed or molded therein to constitute renewable anvil faces, and afurther object of the invention is to provide an anvil body for this`purpose made up of separately formed parts with means for holding themin fixed relation, which, when assembled produce the recesses to receivethe material to constitute the anvil faces.

The anvil faces are preferably formed of a suitable relatively softmaterial, such as is required for dental and like work, which has alower fusing point than the material constituting the body or support ofthe anvil, whereby such material may be poured in a molten state intoand formed in the recesses in the multi-faced body and may be, after theanvil faces are worn, melted therefrom without injury to the materialconstituting the body or support of the anvil. For instance, the anvilfaces may be formed of lead while the anvil frame or support may be madeup of brass or iron or steel eitherV cast or formed of metal platessuitably secured together.

In the drawings,-Figure 1 is a plan view, partially broken away, f ananvil embodying my invention. Fig. 2 is a cross section on the line 2-2of Fig. 1. Fig. 3 is a cross section on the line 3 3 of Fig. 1. Figs. 4,5 and 6 are perspective views of the three pairs of members constitutingthe siX parts of which the anvil frame or shell herein shown is made. l

In the embodiment shown 1n the drawings, the frame of the anvilcomprises a hollow shell that is made up of flat plates suitably securedtogether to constitute a six sided figure, and the hollow shell-likeframe is provided therein with means which eX- tend through the platesto rigidly fasten the plates together. Said plates are so formed and sopositioned on each other as to form at each side of the siX sides of thebody a recess orcavity to receive a body of suitably soft material toconstitute the anvil face.

In a preferred form of the invention, as herein shown, there are sixmain plates 10, 11 and 12, arranged in pairs, and the plates of eachpair are duplicates. The plates 10 are square and are provided on theirouter faces with rectangularly arranged strips or flanges 14 to form thewalls of pockets or recesses 15 at the outer faces of said plates toreceive bodies 16 of' suitably soft material which are flush with theouter edges of the strips or flanges 14 and constitute anvil faces. Thesaid flanges 14 may be formed of a short section of tubing, or may bemade up of separate strips suitably fitted together. Applied to theinner faces of the plates 10 are oblong, rectangular, thin plates 17which may be attached to or loosely fitted thereon. The plates 10 and 17are provided with central apertures 18 through which extend fasteningdevices, as will hereinafter more fully appear.

The plates 11 are of oblong, rectangular shape (Fig. 5), the longerdimension of the plates being equal to the dimension of the plates 10,while their shorter dimension is less than the dimension of the plates10 to an extent equal to the combined thicknesses of the two plates 10and the depth of the strips or flanges 14. Applied to the outer sides ofthe plates 12 in the direction of their shorter lengths, are twoparallel strips 19, 19 each strip being of a length equal to the shorterdimension of the plate to which it is applied, and of the same depth asthe strips or flanges 14 of the plates 10. Applied to the inner faces ofsaid plates 12 are square plates 21 whose dimension is equal to theshorter dimension of the plates 12. The said plates 21 may be attachedto or loosely applied to the plates 12 and they are provided centrallythereof with the apertures 22.

The plates 12 are plain, flat plates 6) and, as herein shown, are squareand of a dimension equal to the shorter dimension of the plates 11. Theyare provided centrally thereof with apertures 25.

In assembling the frame thus made up of the three pairs of plates 10, 11and 12 described, the identical members of each pair are arranged onopposite sides of the shelllile frame. Thus, in the posit-ion of theparts shown in Figs. 1, 2 and 3 of the drawings, the plates 10, 10 arearranged one at the top and the other at the bottom of the anvil frame,with the recesses or pockets 15 thereof opening upwardly and downwardly.The plates 1l are fitted at their upper and lower edges against the topand bottom plates 10, 10 and extend at their end margins flush with theopposite side margins of said upper and lower plates, as shown in Figs.1 and 3, with the upper and lower marginal parts of the inner orshoulder plates 21 thereof bearing against the edges of thel shoulderplates 17 of the top and bot-tom plates. The plates 12 fit snuglybetween the upper and lower plates 10 and between the lateral plates 11,11 and bear at their marginal portions against the edges of thecentering or shoulder plates 17, 17 and 21, 2l of the plates 10 and 11,respectively. The plates 17 and 21 constitute centering or shoulderplates to maintain the plates in their proper relative positions whenassembled so as to hold the shell-like frame formed thereby rigidly inform.

The strips or flanges 19 of the plates 1l constitute opposite side wallsof rectangular chambers or recesses 23 to receive an anvil body 24, theother two opposite sides or walls of which comprise the adjacentextended margins of the plates 10, as best shown in Figs. 1 and 3. Atthe sides of the anvil, shell-like body at which are located the plainplates 12 are formed recesses or pockets 26 that are bounded on twoopposite sides thereof by the margins of the plates 10, and at the othertwo opposite sides by the end inargins of the plates 11, the recesses 26being filled by bodies 27 of suitably soft material to constitute twoopposite faces of the anvil.

Any suitable means may be employed for locking or binding the frameplates together in a manner to provide the multi-recessed body toreceive the material to constitute the anvil faces 16, 24 and 27. Apractical and preferable means of locking the plates together, when thebody is so made up of such plates as herein shown, is made as followsContained within the hollow interior portion of the frame is ananchoring device consisting of three pairs of studs 23, with the studsof each pair extending in opposite directions and with all the studsfiXedly connected at a central point 29. The outer ends of said studsare screw-threaded, as at 30, and the screw-threaded ends of said studsextend through the central apertures of the portions thereof, and thescrew-threaded' ends of the studs are provided with nuts 32 by which toclamp or confine the frame members against said shoulders 31, and theinterfitting shouldered plates of the frame members.

After the frame, made up of the members thus described, has beenassembled and the nuts 32- have been screw-threaded onto thescrew-threaded ends 30 of the studs to rigidly connect or clamp theframe members together, the recesses or pockets 15, 23 and 26 are filledwith the material to constitute the anvil faces 16, 24: and 27, saidmaterial being preferably poured into said recesses or pockets in amolten state. The outer faces of said anvil bodies are finished flushwith the strips or flanges which constitute the walls of the pockets orrecesses.

There is thus provided a rigid anvil body that is constructed to resistthe pounding stresses or strains which may be imposed thereon in use,and provided on all of its sides with recesses to receive the materialto constitute the anvil faces, thereby producing a multi-face anvil inwhich the anvil faces are readily renewable when worn.

The strips 14 and 19 are preferably soldered to the side members 10 and11 when the lat-ter have the form of plates, and may be preliminarilyattached to the plates by the pins shown in Figs. 2 and 3 and while thesoldering operation is being effected. In practice the nuts 32 will bemade somewhat shorter than shown to increase the durability of the anvilfaces. The undercut form of said nuts provides an interlockingconnection which aids to hold in place the relatively soft bodies inwhich are formed the anvil faces. i

It will be understood that, while the illustrated embodiment of myinvention has been described with considerable particularity, theInvention is not limited to the particular manner in which themulti-recessed frame is constructed, nor to the proportions of themembers thereof, but contemplates other analogous means for producingthe plurality of recesses .to receive the bodies of inaterial toconstitute the multi-faced anvil. The construction herein shown,however, is one which may be readily and economically constructed andassembled, and one which constitutes, when assembled, a frame of eX-ceedingly rigid construction.

I claim as my invention l. An anvil for the purpose set forth,comprising a body composed of a plurality of plates fitted together attheir edges, and formed with flanged members to constitute comprising amulti-sided shell composed of portions, certain of the plates beingformed at the several sides of the body pockets or recesses, lockingmeans for rigidly locking said plates together in assembled relation,and bodies of relatively soft material formed in said recesses toconstitute anvil faces.

2. An anvil for the purpose set forth, comprising a body composed of aplurality of plates fitted together at their edges, and formed withflanged members and extensions to constitute at the several sides of thebody pockets or recesses, locking means for rigidly locking said platestogether in assembled relation, and bodies of relat-ively soft materialformed in said recesses to constitute anvil faces, said locking meansextending partially into said recesses, and the anvil face formingmaterial being formd over the parts of the locking means that extendinto said recesses.

3. An anvil for the purpose set forth comprising a frame consisting of aplurality of plates fitted together at their mar ginal portions toconstitute a multisided, hollow body, and formed with flanges andextensions at the several sides of the body to constitute pockets orrecesses, locking means Within the hollow body formed with a pluralityof studs which extend through openings in said plates and are screW-threaded at their outer ends and provided outside the plates and Withinsaid recesses With nuts and bodies of relatively soft Inaterial formedin said recesses to constitute a plurality of anvil faces.

l. An anvil for the purpose set forth flat plates fitted together attheir marginal at their inner sides With shoulders against Which theother plates bear, locking means Within the shell having 4screw-threadedmembers Which extend through the plates and are provided with nuts tohold the plates engaged with the margins and shoulders of conjoinedplates, certain of the plates being provided on their outer sides withflanged members and others of the plates extending beyond adjoiningplates to constitute With said flanged members pockets or recesses onthe several sides of the shell, and bodies of relatively soft materialformed or molded in said recesses, the outer side of which constituteanvil faces.

5. An anvil for the purpose set forth comprising a six-sided shellcomposed of six plates, to wit, a pair of oppositely disposedrectangular plates provided on their outer sides With strips or flangesto constitute outwardly opening recesses, a second pair of oppositelydisposed, oblong, rectangular plates provided on their outer sides WithtWo flanges or strips which cooperate With the marginal portions of thefirst mentioned pair to constitute outwardly opening recesses and athird pair of oppositely disposed, rect-angular plates tted to the firstand second pairs of plates to complete the shell, and arranged adist-ance inside the margins of the second and third pairs of plates,whereby the marginal portions of the first and second pair of platesconstitute Walls which surround recesses at said third pair of plates,means for looking Copies of this patent may be obtained for five centseach, by addressing the Commissioner of Patents, Washington, D. C.

